Jumbo Mental Jackpot by Astor - TrickYou show four large transparent plastic envelopes. One contains a banknote, while the other three have a piece of white paper inside. On the back of each transparent envelope there is a colored dot (red, yellow, blue and green). You now show four jumbo cards numbered 1 to 4. These too have colored dots on the backs. Three spectators freely choose a Jumbo card and receive the envelope with the corresponding color. Naturally all three spectators end up